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Monday, December 20, 2010

Customer has 4.X. we are going to migrate and install version 8.0(2) on new servers, (6 in total) looking at the DMA notes, the latest DMA version is for 7.(1). So If we collect DMA File from 4.x and load onto version 8.0(2) server, will it work? or do I need to be on 7.1 first and then upgrade ot version 8.0?

We assume that we only need to run DMA on the Publisher?

Tips:

There is no direct upgrade path between any 4.x CCM to CUCM 8.x as shown below;

From this excellent doc , you would have to complete a "two-hop" upgrade to 6.x or 7.x as an intermediate step as you nicely noted

FYI - many people are holding off going to CUCM 8.x due to the number of bugs.

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I don't think you need to configure "session protocol sipv2" on an incoming dial-peer.

The "session protocol" command mostly used for outgoing dial-peer.

From the command reference guide:

"To specify a session protocol for calls between local and remote routers using the packet network, usethe session protocol command in dial peer configuration mode. To reset to the default, use the no form of this command."

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Thursday, December 16, 2010

We have a problem with my CUCM solution.We have 2 CMs with version 7.1.2.20000-5 installed in . One CM is installed in the main office and the another one is installed in a remote site. There is a WAN connection between them. By the way, These CMs are not in cluster, they are independent. In the main office we have a gateway H.323 that has a E1 PRI line to PSTN. There is a connection to the PSTN only from main office, we have no connection to the PSTN from the remote site.

The problem is the following: When an extension of main office receives a call from PSTN and someone wants to transfer the call to an extension of the remote site, the phone rings but when someone lifts the handset to answer, the call drops.

We have set up a inter cluster trunk between the two CMs. Calls between IP Phones in different sites work well. The problem is when the caller is on PSTN and wants to communicate with an extension of remote site.

Tips:

The first suggestion would be to check regions/locations because between sites you may have g729 setup to save bandwidth whereas your PSTN call is probably arriving as G711.

Try checking the settings of the H323 gateway and the trunk connecting the two CUCM's to see if there is a difference, if the regions are the same, check the locations.

Other things to check are if you have 'MTP Required' checked or not and resources are available for this.

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We already have COP files for the 3 branches mentioned above:Click here for 7.1.3ciscocm.dst-updater.2010i-1.el4.7.1.3.cop.sgnClick here for 7.1.5ciscocm.dst-updater.2010i-1.el4.7.1.5.cop.sgnClick here for 8.0ciscocm.dst-updater.2010i-1.el4.8.0.2.cop.sgn

Please bear in mind the following suggestions when installing the COPfiles:- Installation to all machines in the cluster is required- As with any installation or upgrade, it is recommended that you apply this Update during off peak hours.- When applying this Package be advised that a cluster wide reboot is required.- It is also recommended that this update be installed on all machines in the cluster before the cluster is rebooted.

Citation - This blog post does not reflect original content from the author. Rather it summarizes content that are relevant to the topic from different sources in the web. The sources might include any online discussion boards, forums, websites and others.